I just bought a 2010 M3 with less than 15,000 miles on it. The rears were shot. I have PSSs on my e46 and I like them so I went ahead about put all 4 new PSSs on the car.

One tire is the original front and the other had been replaced in mid 2011 based on its production date (18th week of 2011), so it had only been on the car for 6 months. It still has quite a bit of tread left since we're talking about fronts. Even the older one has tread left. See the pictures. I'm guessing the newer one has 75% tread left and the older one maybe 25%?

I'd prefer pickup, I'm in north Atlanta. New from Tirerack.com they run $323 each.